Anti-loosening rivet

Abstract

The utility model discloses an anti-loosening rivet which comprises a rivet body and a rivet sleeve, the rivet body is composed of a rivet cap and a rivet column, and the edge of the rivet cap is provided with a first buckling portion which is buckled inwards. A protruding limiting column is arranged at the top end of the nail column, a circle of annular groove is formed in the limiting column, and an elastic protruding ring is arranged in the annular groove. The nail sleeve is composed of a nail cap sleeve and a nail body sleeve, and a protruding first clamping edge is arranged on the upper edge of the nail cap sleeve and fixedly clamped with the first buckling part of the nail cap. A limiting groove for containing the limiting column is formed in the middle of the nail cap sleeve, a protruding second buckling part is arranged on the inner wall of the limiting groove, and the second buckling part and the elastic protruding ring on the nail column work in a matched mode. According to the utility model, the edge of the rivet cap is provided with the first buckling part which is internally buckled, the top of the rivet column is provided with the large-diameter limiting column, and the elastic convex ring is arranged on the limiting column to form a double anti-loosening structure with the rivet sleeve, so that the connection stability of the rivet is greatly improved, the rivet body and the rivet sleeve are prevented from loosening and separating, and the service life of the rivet is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of rivets, in particular to an anti-loosening rivet. Background Art

[0002] A rivet is a nail-shaped object used to connect two parts (or components) with a through hole and a cap at one end. In riveting, the parts being riveted are connected by using their own deformation or interference fit. Expansion rivets are a commonly used type of rivet. Expansion rivets usually include a rivet body and a rivet sleeve. The rivet sleeve has a clamping surface and a sleeve. A groove is provided at the bottom of the sleeve to form an expansion clamping piece. After the rivet sleeve is inserted into the thin plate to be fixed, the rivet body is inserted into the rivet sleeve to expand the expansion clamping piece. The clamping surface of the rivet sleeve and the expansion clamping piece clamp and fix the thin plate, completing the assembly of the thin plate.

[0003] However, most expansion rivets tend to become loose after long-term use. Even when subjected to external impact or vibration, the internal rivet body may fall off from the rivet sleeve, causing connection failure and posing a safety hazard. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an anti-loosening rivet, which can prevent the rivet from loosening and falling off, and effectively prolong the service life of the rivet.

[0005] To this end, the technical solution of the utility model is: an anti-loosening rivet, including a nail body and a nail sleeve, the nail body is composed of a nail cap and a nail column, and the edge of the nail cap is provided with an inward-locking first buckle portion; the top of the nail column is provided with a protruding limiting column, and a circle of annular grooves are provided on the limiting column, and an elastic convex ring is provided in the annular groove; the nail sleeve is composed of a nail cap sleeve and a nail body sleeve, and the upper edge of the nail cap sleeve is provided with a protruding first clamping edge, which is clamped and fixed with the first buckle portion of the nail cap; a limiting groove for accommodating the limiting column is provided in the middle of the nail cap sleeve, and a protruding second buckle portion is provided on the inner wall of the limiting groove, and the second buckle portion cooperates with the elastic convex ring on the nail column.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the first clamping edge has a first arcuate edge inclined downward and a horizontal first blocking edge, and the first buckle portion on the nail cap moves downward along the first arcuate edge and tightly abuts against the first blocking edge.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the elastic convex ring is made of rubber material, the second buckle portion includes a second arcuate edge inclined downward and a horizontal second blocking edge, the spring convex ring moves downward along the second arcuate edge and tightly abuts against the second blocking edge.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: a dividing groove is opened below the nail body sleeve, and the dividing groove divides the bottom end of the nail body sleeve into at least two expansion pieces.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: a first through hole for the nail column to pass through is provided in the middle of the limiting groove, and a second through hole is provided on the inner side of the dividing groove. The inner diameter of the first through hole matches the diameter of the nail column, and the inner diameter of the second through hole is smaller than the diameter of the nail column, that is, when the nail column passes through the second through hole, the expansion sheet is deformed.

[0010] Compared with the prior art, the utility model has the following beneficial effects: an inwardly buckled first buckle portion is arranged on the edge of the nail cap, a large-diameter limiting column is arranged on the top of the nail column, and an elastic convex ring is arranged on the limiting column. In the process of inserting the nail body into the nail sleeve, the elastic convex ring first contacts with the second buckle portion on the inner wall of the limiting groove, the spring convex ring is squeezed and deformed, and resets after crossing the second arc-shaped edge of the second buckle portion, and abuts against the second blocking edge below the second buckle portion to form a first anti-loosening; the first buckle portion on the nail body moves downward along the first arc-shaped surface of the first clamping edge on the nail sleeve, and is clamped on the first blocking edge after slight deformation to form a second anti-loosening, thereby greatly improving the connection stability of the rivet, preventing the nail body and the nail sleeve from loosening and separating, and improving the service life of the rivet. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a structural sectional view of the utility model;

[0013] Figure 3 It is a structural cross-sectional view of the utility model in a riveted state;

[0014] Figure 4 for Figure 3 A partial enlarged view of

[0015] Figure 5 It is a structural schematic diagram of the nail sleeve of the utility model.

[0016] Marked in the figure are: nail body 1, nail cap 11, nail column 12, first buckle part 13, limiting column 14, elastic convex ring 15, nail sleeve 2, nail cap sleeve 21, nail body sleeve 22, first clamping edge 23, first arcuate edge 231, first blocking edge 232, limiting groove 24, second buckle part 25, second arcuate edge 251, second blocking edge 252, dividing groove 26, expansion sheet 27, first through hole 28, second through hole 29. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0018] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0019] See the attached drawings. The anti-loosening rivet described in this embodiment includes a nail body 1 and a nail sleeve 2. The nail body 1 is composed of a nail cap 11 and a nail column 12. The edge of the nail cap 11 is provided with a first buckled portion 13 that buckles inward; the top of the nail column 12 is provided with a protruding limiting column 14, and the limiting column 14 is provided with a circle of annular grooves, and an elastic convex ring 15 is provided in the annular groove; the nail sleeve 2 is composed of a nail cap sleeve 21 and a nail body sleeve 22. The upper edge of the nail cap sleeve 21 is provided with a protruding first clamping edge 23, which is clamped and fixed with the first clamping portion 13 of the nail cap 11; the first clamping edge 23 has a first arc-shaped edge 231 inclined downward and a first horizontal blocking edge 232. The first buckle portion 13 on the nail cap moves downward along the first arc-shaped edge 231 and is tightly abutted with the first blocking edge 232, so as to form a single anti-loosening structure.

[0020] The nail cap sleeve 21 is provided with a limiting groove 24 in the middle to accommodate the limiting column 14, and a protruding second buckle portion 25 is provided on the inner wall of the limiting groove 24, and the second buckle portion 25 cooperates with the elastic convex ring 15 on the nail column 12. The elastic convex ring 15 is made of rubber and has a slight deformation ability. The second buckle portion 25 includes a second arc-shaped edge 251 tilted downward and a horizontal second blocking edge 252. The spring convex ring 15 moves downward along the second arc-shaped edge 251 and is tightly abutted against the second blocking edge 252, which can form another anti-loosening structure.

[0021] A split groove 26 is provided below the nail body sleeve 22, and the split groove 26 splits the bottom end of the nail body sleeve into at least two expansion pieces 27. A first through hole 28 is provided in the middle of the limiting groove 24 for the nail column 12 to pass through, and a second through hole 29 is provided inside the split groove 26. The inner diameter of the first through hole 28 matches the diameter of the nail column 12, and the inner diameter of the second through hole 29 is smaller than the diameter of the nail column 12, that is, when the nail column 12 passes through the second through hole 29 downward, the expansion piece will be stretched open, causing the expansion piece to deform.

[0022] When in use, first put the undeformed nail sleeve 2 into the installation hole of the panel, align the lower end of the nail body 1 with the nail sleeve 2 and knock it in. In the process of inserting the nail body 1 into the nail sleeve 2, the elastic convex ring 15 first connects with the second clip part 25 on the inner wall of the limiting groove 24, and the spring convex ring 15 is squeezed and deformed. After crossing the second arc edge 251 of the second clip part 25, it resets and abuts against the second blocking edge 252 below the second clip part 25 to form a first anti-loosening; at the same time, the first clip part 13 on the nail body 1 moves downward along the first arc surface 231 of the first clip edge 23 on the nail sleeve 2, and is stuck on the first blocking edge 232 after slight deformation to form a second anti-loosening. When the nail column 12 passes through the second through hole 29 downward, it will stretch the expansion sheet 27, causing the expansion sheet 27 to deform, thereby fixing the panel.

[0023] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An anti-loosening rivet, comprising a rivet body and a rivet sleeve, wherein the rivet body is composed of a rivet cap and a rivet column, and characterized in that: A first buckle portion that buckles inward is provided on the edge of the nail cap; a protruding limiting column is provided on the top of the nail column, a circle of annular groove is provided on the limiting column, and an elastic convex ring is provided in the annular groove; the nail sleeve is composed of a nail cap sleeve and a nail body sleeve, and a protruding first clamping edge is provided on the upper edge of the nail cap sleeve, which is clamped and fixed with the first buckle portion of the nail cap; a limiting groove for accommodating the limiting column is provided in the middle of the nail cap sleeve, and a protruding second buckle portion is provided on the inner wall of the limiting groove, and the second buckle portion cooperates with the elastic convex ring on the nail column.

2. The anti-loosening rivet according to claim 1, characterized in that: The first clamping edge has a first arc-shaped edge inclined downward and a horizontal first blocking edge. The first buckle portion on the nail cap moves downward along the first arc-shaped edge and is in close contact with the first blocking edge.

3. The anti-loosening rivet according to claim 1, characterized in that: The elastic convex ring is made of rubber, and the second buckle portion includes a second arc-shaped edge inclined downward and a horizontal second blocking edge. The spring convex ring moves downward along the second arc-shaped edge and is tightly abutted against the second blocking edge.

4. The anti-loosening rivet according to claim 1, characterized in that: A dividing groove is provided below the nail body sleeve, and the dividing groove divides the bottom end of the nail body sleeve into at least two expansion pieces.

5. The anti-loosening rivet according to claim 4, characterized in that: A first through hole is provided in the middle of the limiting groove for the nail column to pass through, and a second through hole is provided inside the dividing groove. The inner diameter of the first through hole matches the diameter of the nail column, and the inner diameter of the second through hole is smaller than the diameter of the nail column, that is, when the nail column passes through the second through hole, the expansion sheet is deformed.

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